A set of secondary authentication certificates expired overnight on Federation.oregonstate.edu affecting Office 365 web logins and Kumo. The certificate has been replaced and service has been restored. The outage was from 1:01AM-8:46AM, Today 12/12/2014. This does not affect OneDrive for Business application, installed office, OneNote or other applications installed to devices; but purely the interactive login page for office 365, and kumo.